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12818253613 = 1119109562673
BaseRepresentation
bin10111111000000011…
…10000011100101101
31020002022210202021211
423330001300130231
5202222433103423
65515535354421
7632435233534
oct137401603455
936068722254
1012818253613
11548862a730
122598982a11
131293838c69
1489857931b
1550050110d
hex2fc07072d

12818253613 has 16 divisors (see below), whose sum is σ = 14854593600. Its totient is φ = 10938343680.

The previous prime is 12818253607. The next prime is 12818253677. The reversal of 12818253613 is 31635281821.

12818253613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-12818253613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818253713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258556 + ... + 304117.

It is an arithmetic number, because the mean of its divisors is an integer number (928412100).

Almost surely, 212818253613 is an apocalyptic number.

It is an amenable number.

12818253613 is a deficient number, since it is larger than the sum of its proper divisors (2036339987).

12818253613 is a wasteful number, since it uses less digits than its factorization.

12818253613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562812.

The product of its digits is 69120, while the sum is 40.

The spelling of 12818253613 in words is "twelve billion, eight hundred eighteen million, two hundred fifty-three thousand, six hundred thirteen".

Divisors: 1 11 19 109 209 1199 2071 22781 562673 6189403 10690787 61331357 117598657 674644927 1165295783 12818253613